The Mendocino County Sheriff’s Office announced on Wednesday that partial remains found on May 9, 2018, in Mendocino County had been identified by the California Department of Justice Bureau of Forensic Services Laboratory as missing person Hannah Hart, 16.

Hannah Hart was one of six children presumed dead after the Hart family SUV went over a cliff in March 2018 in the area of Juan Creek and North Highway 1, just north of Westport.

Fifteen-year-old Devonte Hart is still listed as a missing person. The Sheriff’s Office said the most likely scenario is that Devonte Hart also died in the crash, but the case remains open and active. Although they will follow up any viable investigative lead, they have not received any indication of the whereabouts of Devonte Hart elsewhere.

The Sheriff’s Office said it received word Tuesday from the DOJ Lab that additional DNA test results of the remains found in May, consisting of a partial foot located inside a shoe and attached to a pair of jeans, belonged to Hannah Hart.

The remains found in May were forwarded to the DOJ Lab last year to see if a DNA profile could be determined, and if so, if the remains could be identified as one of the two remaining missing children, Devonte Hart or Hannah Hart.

On June 8, 2018, the MCSO was notified the results of the testing by the DOJ LAB were inconclusive and the remains could not be positively identified. The DOJ LAB personnel requested additional samples from known family members so further testing could be conducted.

In October of 2018, a woman who identified herself as the mother of Markis, Abigail, and Hannah Hart contacted the MCSO and indicated she had heard of this incident via a family member.

The MCSO said that she was fully cooperative in the investigation, and with the assistance of detectives of the Mobile Alabama Police Department, a DNA sample was obtained from her and forwarded to the DOJ LAB for comparison testing that resulted in a positive match.

The traffic collision in March initially resulted in authorities declaring parents Jennifer and Sarah Hart, both 38, and children Markis Hart, 19, Jeremiah Hart, 14, and Abigail Hart, 14, dead.

Authorities during the initial investigation listed three other family members as missing: Devonte Hart, 15, Hannah Hart, 16, and Ciera Hart, 12. Human remains discovered in April on the beach just north of where the collision occurred were identified via DNA testing by the DOJ Lab as being 12-year-old Ciera Hart.

The MCSO said the investigation had been an ongoing effort with the cooperating investigatory agencies of Clark County Washington sheriff’s office and the California Highway Patrol.